Madshus is a Norwegian ski and ski-equipment manufacturer, located at Biri in Gjøvik.

Madshus is one of the world's oldest ski manufacturer.

The company moved to Lillehammer in 1936 and then to Biri in 1972.

In 1988, the factory was bought by K2 Sports Inc, but the skis are still produced at Biri.

Some Madshus skis have been made in China (e.g. some 2013-2014 Glittertinds).